MLBEDSW-11345: Add ReduceMax support for Ethos-U55
Expanded Ethos-U85 ReduceMax support to Ethos-U55 for i8 and i16. The operator is handled as maxpool operation with kernel size equal to the IFM tensor size.
Change-Id: I496e85710a7d9c5c50e30a04be3d27f3e868b93f Signed-off-by: Max Bergfelt max.bergfelt@arm.com